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Genome-wide interaction study of smoking behavior and non-small cell lung cancer risk in Caucasian population
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2018 (Engelska)Ingår i: Carcinogenesis, ISSN 0143-3334, E-ISSN 1460-2180, Vol. 39, nr 3, s. 336-346Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Non-small cell lung cancer (NSCLC) is the most common type of lung cancer. Both environmental and genetic risk factors contribute to lung carcinogenesis. We conducted a genome-wide interaction analysis between SNPs and smoking status (never vs ever smokers) in a European-descent population. We adopted a two-step analysis strategy in the discovery stage: we first conducted a case-only interaction analysis to assess the relationship between SNPs and smoking behavior using 13,336 NSCLC cases. Candidate SNPs with p-value less than 0.001 were further analyzed using a standard case-control interaction analysis including 13970 controls. The significant SNPs with p-value less than 3.5x10-5 (correcting for multiple tests) from the case-control analysis in the discovery stage were further validated using an independent replication dataset comprising 5377 controls and 3054 NSCLC cases. We further stratified the analysis by histological subtypes. Two novel SNPs, rs6441286 and rs17723637, were identified for overall lung cancer risk. The interaction odds ratio and meta-analysis p-value for these two SNPs were 1.24 with 6.96x10-7 and 1.37 with 3.49x10-7, respectively. Additionally, interaction of smoking with rs4751674 was identified in squamous cell lung carcinoma with an odds ratio of 0.58 and p-value of 8.12x10-7. This study is by far the largest genome-wide SNP-smoking interaction analysis reported for lung cancer. The three identified novel SNPs provide potential candidate biomarkers for lung cancer risk screening and intervention. The results from our study reinforce that gene-smoking interactions play important roles in the etiology of lung cancer and account for part of the missing heritability of this disease.

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Oxford University Press, 2018. Vol. 39, nr 3, s. 336-346
Nationell ämneskategori
Cancer och onkologi
Identifikatorer
URN: urn:nbn:se:umu:diva-142386DOI: 10.1093/carcin/bgx113ISI: 000427120100004PubMedID: 29059373OAI: oai:DiVA.org:umu-142386DiVA, id: diva2:1161037
Tillgänglig från: 2017-11-29 Skapad: 2017-11-29 Senast uppdaterad: 2019-05-10Bibliografiskt granskad

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Grankvist, KjellJohansson, Mikael

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